Diaphragm-horn.



M. E. MYERS.

DIAPHRAGM HORN.v

YAPPLICATION FILED MAR. 5. |912.

Patented Dec. 25,1917.

M l In Vle-11 tor: /ZJ Atty' STATES. PATENT FFICE, Mon'roNvEAnLE MYERS, or Nnw Yoan, N. Y., ASSIGNOR, BY MESNn ASSIGNMENTS, To

JAMES A. ABELES, or NEW YORK; N.\Y. f

mAPHnAGM-MORN.

Specification of Lettersk Patent. Patented DeC.` 25, 1917- Appneatidn med March' 5, 1912. serial No.681,752.

To all whom t may concern Beit known that I, MoRToN EARLE MY- nns, a citiz'en'of the United States, residing at the borough of Manhattan, in the city, county, and State of New York, have invented certain new and useful Improvements in Diaphragm-Horns, o'fvwhich the following is a Specification, reference being had therein to the accompanying drawings, which form a part thereof. y

My invention relates to diaphragm horns, and more paiticularly to ra type wherein roV` tary movement is imparted to the striker member by Aa reciprocatory actuatingA stem which, when the horn is mountedupon a vehicle, will be conveniently accessiblelt'o the chauffeur. The actuating stemimparts` a rotative movement tothe striker member and is automatically restored to normal without interfering with the continued rotation of Said striker `member under momentum, and without a rotative movement of sald actuating stem.

The main object of my invention is tol provide a horn of this character wherein the desired frequency of diaphragm vibrations maybe secured by the movement of the actuating handlethrough a convenient distance and without the necessity of employing any multiplying gearing, auxiliary shafts, or rotating parts, other than the diaphragm actuating member and the parts coaxial therewith.'

In my improved construction, theV striker member, or diaphragm-actuating cam,y is mountedto rotate about an axisparallel to the diaphragm and a manually movable member is mounted to move downward vertically in' a direction also parallel to the diaphragm. The direct coaction of the downwardly movable' manually-actuated member and the Support for the rotor causes the ro'- tation of the rotor without the interposi-V tion of multiple gearing. These directly coacting parts for converting -the reciprocat# ing into rotary motion may be varied within the scope of the appended claims without departing from the spirit o f my invention. They permit a great reduction in the number of parts and the cost of manufacture and assembly, and cannot readily get out of order. At the Same time, they readily permit the continued rotation of the rotorun-` der its own momentum during the return movement of the manually actuated reciprocating member, which latter movement is preferably accomplished by a SuitableY spring.

As one important feature of my inven-` tion, VI Vutilize a worm. and nu't'relativelyl movable axially, one being connected to the handle and the other to the rotor] In the l moved in the reverse direction. i

As an important feature of my invention, I make the rotor of dished form with the tion and is allowed .free rotation when toothed portion at the peripherylying in a planeV diametrically y'of the diaphragm for engagement with a wear-piece at the center of the diaphragm.` The center of dished portion of the rotor is at one side of the plane ofthe toothed portion, whereby the actuating mechanism may have a greater range of movementby entering the dished portion and without necessitatingy any enlarging of the size of the casing containing the operating parts.

Referring to the drawings Figure l is a vertical section of a horn embodying my'invention; l

Fig. 2 is" a horizontal Section of thestriker member and its actuating means; and

F ig. 3 is a detail viewvof the nut coperating with the worm for actuating the striker member;

Like letters refer to like the several views. A

In the vform of my invention Shown inthe accompanying drawings, @indicates a horn casing having 'an ordinary soundy outlet parts throughout opening in; communication with an ordi` by thedisk d is a bracket fprjecting-from a point eccentrically ofsaid ydiaphragm and dicularly of the a-Xis ofthe diaphragm, thusv permitting the application of power tothe striker member` ina line. at right angles tothe direction inwvhichit isdesired to projeet the sound Waves. This. constructonis. desirable aspermitting the convenient application of manual power to the horn, and the application of snclrpower in a line which will permit the developmentv of the desired speedA and duration in therotation, of the said, striker member. with the smallest cx penditure of energy by the chauffeur'.

To insurethe application of pow-er in an equal degree upon. both sides of they saith Worm shaft 7L, I providethis shaft with ai plurality of similarly pitched threads 7L and h2, starting at diametrically opposite points.

Slidably mounted upon the said shaft Lv is a nut having diametrically opposite interior teeth z" adapted to cooperate with the threads 7L and 7L? respectively, which nut.

is acted upon by a helicoidal spring'j 'grad'- sally reduced in diameter toward the nut i, so as to cause the coils thereofwhen tensioned-to nest one within the other-andthus place. nov substantial limitation upon the quantity of movement of said nut inactuating said striker-member.

The cupped portion g2 of said.` striker member and the construction of'saidgspring afford therequisite clearance to permit.A that movement of said nutnecessary to impart to said stri-ker membermovementof-v suflicient duration tovdevelopasignal'of the-de-v sired length.

The-springj hasfor its.: sole function the restoration of the nut z' to normal, so tljiat-` it; doesnot addl materially to the Aload'in actuating the horn.

The Worm shaft L! is;A attached to the strikermember gat: the bottom thereof andi projectsbelow saidvmember ina manner to` form a.bearing 71,3 forftheshaft 71I7 adapted to rotate in a bearing ff inthe bracket ff, 'the lower end of fsaidf shaft being provided with a coney 70 About thel bearingv ff on both sides thereof, the bracket f' isA beveled as shown, andseatedbetween theaipperbeveled edges. and the-,cup Agr?, andg between; thellower beveledI edges. andthe i cone .7e are p luralitiesv of balls encircling and bearing upon the bearings k3 of the said shaft [a This constructions. affords'.y not onlyl a ball bearing for the striker member, but also an extended bearing which will tend to pre vent any playof thestriker member'fsutli'- cient'to vary thenormal relation of the contacts g thereon and the diaphragm stud e.

Inclosing the striker member is a housing m having in the top thereof and alined With the shaft h a bearing post n in which is slidably-mounteda. stem o. This stem and the bearing therefor are preferably flattened at one point thereof so astoprevent. rotaition off said stem,- the stem itself being hollow so as. to permit it to telescope uponthe wormshaft la The periphery of the nut z' is provided with ratchetI teeth i2 as shown,- and said nut is held against rotation in one direction by meansof a springipressed'pavvl p mounted in abracket- @carried byl thestem @this paiv'l being so set as to hold said nut against rotation. when it is depressed While per mitting.l it to rotate freely When it` is permitted to rise under. saidspring y'.

Theoperationyof the herein described horn is substantially as follows When ,itv is desired. to sound; an alarm sig.- nal, thefstem-o is forceddownivardly by., the handor, foot of; the chauffeur,- ivith sufficient force yto develophigh velocityinthe striker member 9. Whendepressed,4 this stem carries with it the nut-t' which is held; against rotation by the paWl p duringits y descent'` the force applied to the stem 0 being` thus direetly applied to rotate the shaft 71, and" with itthestriker `member g: and; impart to the diaphragmA e.v a sequence.4 of impulses. or

flexures. whichA will develop, the requisite. sound Waves. Thefspringliwill be placed in tension-by. the nut i,`

Thef use of a plurality;V of; Wormsat dia-y metrically.- opposite points results.4 in the' equal application of power upon both sides of the shaft h and thus minimizesor eliminates anytendency of thenut z'. tobind upon saidfshaft.

As. the' stem 0 descendsiit will' telescope the shaft 711,.y andiy thus permit, the nutyz' 'tobe forced Within; the cup. g2 until said nut isv substantially coincident, Witlr the i bottom' of,

stemy or is: released or reaches.

niitting `thestrikerfmember to overrun under its momentum7 and limiting theresistance i encountered thereby at any pointk to 'the` friction between, it andV74 thestud ef; As the stem 0 is. released`v the `springlwill force the nutz' and Withit thefstem 0 upwardly.,A

to their normal positions, the nut turning freelyt with or; upon-thesaid shaft la The flattened portion of the stem o preiront of the vehicle, and the stem o may be dii'ected vertically so that the weight'of the chauiieur may be utilized in 'applying the necessary power to the stein 0 without inconveniencel and in a manner to facilitate the application of' the maximum power. rThis 'feature'of permitting the application of power at right angles yto the line of proj ection of the sound waves isof considerable importance, as facilitating the quick actuation ot the horn while at the same time permitting the development of that velocity in the rotation of the striker member necessary to develop sound waves of high'frequency. y i

It is not my' intention to limit the iiivention to the precise details ot' construction' shown in the accompanying' drawing-sit being apparent that suoli may be modified without departing from the spirit and scope of the invention'.

Having described my invention, what l' protected ing membena worm shaft carried by said striker member, and actuating means carried by, and movable with, said actuating member. and cooperating with said worm shaft, said actuating means beingV provided with means adapted to impart rotary movement to said striker member upon the depressionof said actuating member, andto rotate with said striker member exceptduring' suchde# pression of said actuating member.

2.I Av` diaphragm horn, embodying therein a horn casing having a 'sound outletopening, adiaph'ragmmounted insaidcasiiig, a rotary'striker member, theV axis of which is perpendicular to the axis of said diaphragm,

a worm extending axially of said striker member, a nut cooperating with said worm,

means holding said nut against rotation inl one direction while permitting it to rotate freely in the other direction, and a depressible non-rotary actuating member controlling said nut whereby the depression ofsaid actuating member will rotate said striker meii'iber and flex the diaphragm.

3. Al diaphragm horn embodying therein a hornicasing having a sound outlet opening, a` diaphragm mounted in said casing, a

rotary striker member, the axis of which isi-1 perpendicularto the axis ofthe diaphragm,V

a worm` extending Vaxially of 'said striker member, a nut cooperating with said worm having ratchet teeth upon the periphery thereof, a depressible non-rotary actuating stemfcontrolling said nut, anda pawl carried by said stein and cooperating with the ratchet teeth upon saidnut whereby the de-y pression of said stem will rotate said striker member and Hex said diaphragm.

4. A diaphragm horn, embodying-'therein a horn casing having a sound outlet open-V a nut cooperating with said worm, spring means to restore said nut to a normal position, and a depressible non-rotary actuating membercontrolling said nut whereby the deHV pression of said actuating member will ing, a diaphragm mounted in said casing, aY

rotate said striker member and Hex said 'I diaphragm. f

5. A diaphragm horn, embodying therein a horn casing having a sound outlet opening, a diaphragm mounted in said casiiig,-a

rotary striker member having a'cup-shaped central portion, the axis of which isfper" pendicular to the axis of the diaphragm, av worin extending axially of said striker meinf ber and projecting beyond the bottom of said cupshaped portion, l a'4 bracket having a bearing therein adapted to receive said projected end, said lbearing having oppositely disposed bevels thereon, a cone carried by the bottom of said projecting end, bearing balls seated upon opposite ksides of said bracket and disposed between' said bracket and said cup and between said bracket and K said cone, a nut slidably /mouii'tediipon said worm, and a depressible noli-rotary actuat-y ing stem controlling said nut whereby the depression oi said stem lwill rota-tey said striker member andflex said diaphragm.l

6. A diaphragm horn embodyingtherein a horn casing having a sound'oiitlet opening, a diaphragm mounted in saidlcasing,

iio Y a rotary striker member, the axis of which is perpendicular to the axis of' said diaphrag'm, a worm extending axially ot said striker membeigrsaid' worm having a plu-.

rality of threads oi' similar pitch upon op-y posite sides thereof, al nut having a plurality of interior teeth copera-ting with said threads whereby a binding 'of said nut is prevented, and a depressible non-rotary' actuating stem controlling said nut whereby the depression of said actuating member'` will rotate said striker member Yandlriexv said diaphragm.

ias'

7. A diaphragm horn, embodying'therein a horn lcasing having a sound outlet `opening, a diaphragm mounted in said casing, a rotary striker member, the axis of which is perpendicular to the axis of said diaphragm, a worm extending axially of said striker member, a nut coperating with said worm, a housing for said striker member' and said actuating member, a flattened bearing in said housing, and an actuating stem similar in configuration to said bearing, mounted therein and controlling said nut whereby the depression of said stem will rotate said striker member and flex said diaphragm.

8. A diaphragm horn embodying therein a horn casing having a sound outlet opening, a diaphragm mounted in said casing, a disk parallel with and spaced away from said diaphragm, said disk having a central opening therein, a stud carried by said diaphragm in. alinement with said opening, a rotary striker member, the axis of which is perpendicular to the axis of said diaphragm, a worm extending axially of said striker member, a nut coperating with said worm, and a depressible non-rotary actuating Stem controlling said nut whereby the depression of said stem will rotate said striker member and flex said diaphragm.

9. A diaphragm horn embodying therein a horn casing having a sound outlet opening, a diaphragm mounted in said casing, a rotary striker member having a cup-shaped central portion, the axis of which is perpendicular to the axis of the diaphragm, a worm extending axially of said striker member, a nut coperating with said worin, spring means to restore said nut to a normal position, and a depressible member controlling said nut whereby the pressure of said actuating member will rotate said striker member and flex said diaphragm.

10. A signal comprising a driving shaft, a shaft rotating member movable along the shaft to rotate the shaft, a diaphragm actuating member having a toothed portion disposed substantially diametrically of the diaphragm and another portion mounted on the shaft and connected to the toothed portion and disposed in a plane to that side of the plane of the toothed portion opposite that upon which the shaft-rotating member is positioned.

11. A signal comprising a driving shaft, a shaft-rotating member movable along the Shaft to rotate the shaft. a diaphragm actuating member having a portion disposed in one plane and another portion mounted on said shaft and adapted to actuate `the first named portion and disposed in a plane to that side of the first named portion 'opposi te that upon which the shaft-rotating member is positioned.

12. A signal comprising a diaphragm, a cam, a powerftransmitting member coacting and its central portion dished, a shaft upon i which said cam is mounted, and means in connection with the shaft and movable into and out of said dished portion for rotating said shaft.

13. A signal comprising a diaphragm, a resonator at the front of the diaphragm, a casing at the rear of the diaphragm, a shaft Within the casing and rotatably mounted in substantial parallelism with the diaphragm, a diaphragm actuator mounted upon the shaft and rotating with the shaft 4and in a plane substantially perpendicular to the diaphragm and adapted to co-act with the diaphragm to force vibration of the latter as the former is rotated, a nut movable longitudinally of said shaft, a handle having a portion disposed outside the casing and another portion within the casing and adapted to move said nut longitudinally of the shaft, means for holding the nut from rotation when moved longitudinally in one direction whereby the shaft is rotated, and allowing free rotation of the nut when moved in a reverse direction whereby the shaft may ref main stationary.

14. A signal comprising a diaphragm, a casing, a shaft rotatably mounted within the casing, a diaphragm actuator mounted upon the shaft and rotating therewith and adapted to co-act with the diaphragm to force vibration of the latter as the former is roV tated, an operating member movable longitudinally of said shaft, said operating member and said shaft having coperating parts so formed and arranged that longitudinal movement of said member forces relativer rotation of said shaft and member, and

means for holding said member from rotation when moved in one vdirection whereby rotation o f said shaft is forced, and allowing rotation of `said member when moved in the reverse direction whereby the shaft may remain stationary.

15. A signal comprisinga diaphragm, Aa

casing, ka shaft rotatably mounted within the casing, a diaphragm actuating member -having a toothed portion disposed vsubstantially diametrically of the diaphragm and another portion mounted on the said shaft and adapted to actuate the first-named portion and disposed in a yplane to one side `of the toothed portion, an operating member moyable longitudinally of said shaft to forcek relative rotation of said A Shaft and member, said operating member movable into the plane of the toothed portion Of the actuator.

16. A signalcomprising a diaphragm, a casing, a shaft rotatably mounted within the casing, a diaphragm actuating member having a teothed portion dspQsled ,substantially diametrically of the diaphragm and;

another portion mounted on 4'the said sha-ft and adapted to -actuatethe firs"tfnarnedfportion and disposed in a pla-ne 'side of the toot-hed portion, an voperating member movable longitudinally of said shaft toforcey relative rotationV of saidjshaftfl'andfmember, said operating memberl movable intofthe planeof the toothedY portion ofthe actuator, means Yfor holding thesaid-:operating' member from rotation 4When moved in onedirectionalong the shaftfvhereby the shaft. is

rotated, and allowing rotation offthe member 'when moved i' in thel other direction, whereby the shaft'may remain stationary.

" 17; A signallcoinpri'sing'a diaphragm, a casing, a shaft rotatably mounted Within the casing, a diaphragm actuating member having a toothed portion disposed substantiallyl ,diametricallyY of j the diaphragni` and another portion'mounted on the said. shaft and adapted to aetuate the first-named pori tion and disposed in Va' plane to one'side of thev toothedI portionyan operating member movable: longitudinally of'said shaft to force relative vrotation of ,said shaft and member, said operating member movable intojthe plane of the toothed portion of the actuator, means for holding the said operatingmemlloer from rotation when moved in one direction along the shaft,vwhereby'the shaft is rotated, and allowing rotation of thefmember when moved in the other direction,

`whereby the shaft may remain stationary, a handle having a portion disposed outside'the casing and another portion Within the casing and adapted to move said member longitudinally of said shaft, and automatic means for returning said handleand member to starting position after each shaft-rotating movement; Y

18.` Av horn including 4in combinationa casing, a diaphragm having a bearing pin centrally thereof, a serrated memberdirectly cooperating With said bearing pim-said member being disposed sov as torotate about an axis parallel With the plane of the diaphragm, a hollow hub located in said casin@ and carrying saidserrated'membena shaft extending through said. hub and attached thereto, said shafts having a helical groove extending into said hub, a push rodmovable parallelvvith the shaftand into saidhub,

and means for connecting said push rod' to said shaft whereby a movement of the push rod in one direction Will rotate the shaft.

19. A horn including in combination a casing, Ya diaphragm having a bearing pin centrally thereof, a serratedmember directly cooperating With said bearing pin, said member being disposed so as to rotate about an axis parallel with the plane of the diaphragm, a hollow hub located in said casin and carrying said serrated member, a sha t shaft upon which, saidV cam Yis mounted, said extending through said attached thereto, saidshaft having a helical,V groove extendinginto said hub, a push rodmo'vable Y parallel Witlvrthev shaft into said?, hub,

means a foiyconnecting said y'ref-d to `:said shaft ywhereby amovement ,'of'thejpu'sh rod 70 A in one 'direction ivill Q1 rotate l the and ,Wherebya movement of theY push rod' in the opposite direction Will disconne,ctfthe"VV same d d hengdisconnected'froml'sai operating 'shaftg l, d 20.V A signal comprising a driving shaft, a shaft-rotating member movable along .the

3 from the shaft, *andV Va 'spring for *moving said push rod W shaft to rotate the shaft, afdiaphragmactui ating member yhaving a :toothed portion and another portion mounted on saidfshaft rigidly connected to .theftoothed portion and Vdisposed in a plane` to that'fside 4ofthe toothedV portion opposite thatupon vvhich the shaft-rotating member -is positionedfvj '321. :In a signalja diaphragm, atoothed vmember for vibrating the diaphragnnja driving shaft, an operating ymember movable-` lengthwise of the shaft, means for vsecuring fthe toothed member tothe-drivin@ shaft'in l a plane to that side of the plane ofP thelteeth opposite that upon Vwhich the'hoperating member is positioned.Y l

l 22. A signal comprising'a diaphragm,""ai'y cam, a power-transmitting inembercoa'cting 95 AWith the cam to vibrate the diaphragm, lsaid' Vcam having its marginal portion` ciSpQSed substantially` diametrically of, the: diae phragm 'and its central portion dished, a l

00 shaft having a'spirally arranged "portion, and a member mounted on said shaft vand movable. along the shaft into and out of'said "dishedportion' of the cam. 1 L

23. A signal comprising" a diaphragm, 'a 105 cam, a power-transmitting member coactinof Withthe cam tovlbrate the diaphragm, sai

cam having its 'marginal portion disposed Y Asubstantially diametrically of the diaphragm and its central ,portion dished, a sha-ft upon which. said'r cam ijs mounted, said shaft having a spirally` arranged portion, a member mounted jon `said ,shaft and movable', along the; shaft'into vand out of said dish'e'd portion Vofv the cam, Yand means in' connecti'onvvith saidmmember for rotatingthe shaft When 'said member is movedin one direction.

with said membeiI for rotating, the shaft:r When said member4 isk moved. in one direction,v andmeans allowing afi/ee ijetnrn movement of saidmembe to startingoposition Without forcing rotation of Hsaid shaft.

2'5- 'A Sigiial Comprising @l diaphragm, fi resonatorat the front of the, diaphragm, a easing at the rear of the diaphragm'7 a, shaft Within the casing and vrotatably'mmn'ted inY snhstantial paialleliSm with the diaphiiagrn,

ya diaphragm actuator mounted iipon Vthe shaft andr'otati'ng with the shaft and; in a planersnbstanti ally perpendioulaifto :the diaphragm, and. adaptedto eoac't vv'ithEt-he diaphiagm to, iroiee vihation yoi, the latter" as the fo'ielnis"rotated,I a nut movablello'ne'iportion disposed outside the C aSing andlanother portion ivithin'the oa'sing'andfaflapted to 7move'rsa'idnt longitudinally of the shaft,

i means f 'o holding.` the VInut l ijom `rotation when movedy longitudinally in one diieetion whereby ilig' Sii'ifilis rotated, irri rilleiiiig free rotation of the nut when movedl in a reverse` ditteetioriWheireloy"thev shaft mayV ne-` 'ahandle adaptedfoiynioving the mit' along the Shaft, Said mit andis'aid'Shaftfhavingoooperating Aparte sof'formeld'. and arranged that, longitudinal movement, ofisaid( mit forces `ielative 1'`oltatiorn`` off Said.' shaitl and nut, means forl holdingfsaid mitfroo4 Irotation Wlienl moved in onefdeeti'onjWheeby rotation fo'f Said Shaftfig'` forced, and Aallowingiotation os-aidfnilt when moved in. the reverse ldiieotion whereby vthe shaft: 1.e-

Q'Tfna 4`signal, the oombinationwith a spiral Shaftoa. nut ooi-related ivith'the shaft sothat movement .ofone ofjsaidmemloeisjY axially off the:y otherl oaiises f afi'otative movement of o'nefojf said membe, aiain Qorrelated. with one ofl-said-.members so that otation v ofQSaid nl iembelgv rotationt of theoam, meansfor movingone oi Said membeiisl, axially of.y the other tol notate thel oam, saidmembers 4each rotative, With yIrresipeot to *Said meane, additional;4 means allowing/re! fini-n. movementfof lthe axially 'movable memherfwitliont rotation ofE the cam, a casing Within4 which Said membes are mounted, @i @diaphragm Serin vibmiionby met@ offl Said cam.'y

"28a-fri. ,Sigiiil Comprising ri diaphragm, i diaphigagm ,vibratingD member rotatable alhouta'n axis; parallel'to said diaphiagm, a

@rising iiiirieiiigi Seid 'membermi having-ire o perip grafia' pQriOri held lrigid-I iii; rer/peet i0 the peripheral; 'otion of: the diaphragm, a hande outside 'ofi said 'easing and rileva leriihe direriiiii 0f; the iXisfJOfYV Seid diaphragm rieiiliirg.: member, r1,- Wriri rigidly' iii-.erred i0 011e, Qi Seid member@ GX- ieririirig :iigiigi lSeid rirfieiiifiri` i iiiiif giigigiiig iii'ih-{Sriid Woriri, and heldgiigaiiisi relative refiiioiiliii reinigt iQ-iheeiher member when Seid iiriiiilie iS I were@ in.l 'one' diiggtien and;

fer relriiivg rQiriiiQii when: 'Saidj handle ii. reeiedf iii.. iheoiipesite dirretieii 29..- A signalm1 5,deviek in tpluding. a:4 diaphragm, aA rotog rotatable, about anA axispalrfiilil iiiSiiid diiniirigirifi Sliifisiipneriing Seid; reime-irrt niriliel; i9 Seid diaphragm fiiiiiihiiiiig serrare. irregularities, a, handle iiigrriber meiiibleivgriialiy and ma, 1111er- 'riii. iiiiialllfie reid@ diaphragm, findV means -flir prix riigigirig4` with Seid Surfer@ irregu-L f larities andgnolndinga ratohectand paivlgor diife .oftl,f 'rotating Said: rotorjrin, one diieetion @HRH-ig the, ClQPrGSSiQIi 0i@ Said har-idleL and prnuiiiiig-gliiiliiiirQiiliiQliOi Siting `IQtQr inv the Same direiioii dering the return movementoi said handle, 4

Iii.: iiiiiieiiihergei Ia here hereunto i. affixedmylsignatiiie, in the. presence, of. vthree sglisrribiiigvifeesses, this ist.. diy. OirMiirh,

MQiirQNfri-fiiiriiirrriisf 

